Derrick-fitting



R. R. BLOSS AND W. SCHWEMLEIN.

1 DERRICK FITTING. APPLI CAT|0N FILEDKOCT 2, 1920.

1,385,659. Patented July 26, 1921.

wy l/u anm UNITED STATES PATENT OFFICE.

RICHARD RALPH BLOSS AND WILLIAM SCHWEMLEIN, OF PARKERSBURG, WESTVIRGINIA, ASSIGNORS TO THE PARKERSBURG RIG & REEL COMPANY, OFIPARKERSBURG, WEST VIRGINIA, A CORPORATION OF WEST VIRGINIA.

DERRICK-FITTING.

Specification of Letters Patent. Pat t July 2 1921;

Application filed October 2, 1920. Serial No. 414,240.

To all whom it may concern:

Be it known that we, RICHARD R. BLoss and WILLIAM SCHWEMLEIN, citizensof the United States, residing at Parkersbur in the county of Wood andState of West irinia, have invented certain new and useful Improvementsin Derrick-Fittings, of which the following is a specification.

This invention relates to derrick fittings, and it comprises acombination'with the leg sections and horizontal girths of an angle ironderrick,vof a'pair of plates adapted to be secured to the ends of thegirths, or to one of. the girths or leg sections, said plates beingprovided with curved flanges on their upper and lower edges adaptedtoreceive and support the ends of the leg sections.

Der ricks for oil rigs must 'be' provided with derrick fittings ofsimpleconstruction that'can bequickly put in place and removed when thederrick is being erected and disassembled. It is advantageous to providea construction wherein the rig builder is not depended upon toproperlyadjust the parts to obtain a symmetrical structure. A derrickfitting, to be satisfactory, should be constructed in. the shop with thevarious openings for the reception of fastening means properly placedwhereby the derrick, when assembled, will produce a symmetricalstructure.

In the present invention, we have provided a very simple form of derrickfitting for use in connection with angle ironv derricks. The inventioncomprises a pair of plates which may be shop riveted to the girths or toone girth and one leg, the plates 1 being provided with curved flangesfor the reception of the ends of the leg sections. The diagonal bracesare secured to these plates by means of rotatable blocks havingeccentrically arranged openings for the reception of the end of thebrace. The parts may be properly assembled and the blocks then rotatedto tighten the braces as described in the coendin application of RichardR. Bloss, erial 0. 414,241, filed October 2, 1920.

In the accompanying drawings, we have disclosed one embodiment of theinvention. In this showing- Figure 1 is a side elevation of a portion ofthe derrick showing the derrick fitting in position.

Fig. 2 is a similar viewat right angles to F1g. l, and i I Fig. '3 is aperspective view showin the parts detached.

Referring to the drawings, the reference numerals 1 and 2 designate theupper and lower leg sections respectively of a derr1ck. At the pointwhere these leg sections are 01ned, thederric'k is provided withhorizontal girths 3'and4 arranged at right angles to each other. Thefittingcomprises a pair of plates5 and 6. The plates may be secured tothe girths, or as shown, one of the plates may be secured to the lowerleg sect1on and the other to a girth. Any suitable means may be employedfor securing the plates 1n position and we have shown them, secured bymeans of rivets 7, the plates being riveted to the legs and girths inthe shop, where the derrick is constructed thus reducmg the amount ofwork'to be done in the field when erecting the derrick. The upper edgesof the plates are provided with curved flanges 8 which receive the upperend of the lower leg section to transmit strains from the derrickstructure above the fitting to the leg section. The lower edges of theplates are provided with similar flanges 9 whlch receive the lower endsof the upper leg sections to transmit the strains to the fitting andthence to the lower leg sections.

As shown, the plurality of bolt holes 10 are provided in the plate 6,and the upper and lower leg sections are provided with bolt holes 11 and12 respectively. Bolts 13 are arranged in these openings when thederrick 1's assembled to secure the parts to 'each other. The bolts areprovided with nuts 14 I to retain them in position. A bolt opening 15 1sprovided in the plate 5 and the upper end of theleg section 2. The upperleg sect1on 1 is provided with a bolt opening 16. When the derrick isassembled, the relation of the various parts to each other is such thatthe bolt openings 15 and 16 are brought Into alinement. Bolt 19 ispassed through these allned openings to secure the parts to each other,the bolt being provided with a nut 18. The girth 3 is secured to theplate 5 by means of bolts 17 passing through openings 20 and 21 in thegirth and plate respectively. The upper end of the diagonal brace 22which extends from the next lower section of the derrick is providedwith a terminal 23 arranged at right angles and extending through anopening" 24 in the plate 5. A cotter pin 26 is passed through an openingin the terminal to secure the end of the brace in position.

The lower ends of the braces are provided with adjustable securing meanswhereby the .braces may be tightened after the parts are assembled.

As shown, the end of the brace 27 which extends to the next section ofthe derrick fittin above is provided with a terminal 28 which isextended at substantially right angles and received in an eccentricopenlng in rotating block 29. The block is arranged in an opening 30 inthe fittin plate and is provided with an extension 31 avin a handle 32.A rin 33 is arranged ont e brace and is adapte to be slipped over theend of the handle when the brace is tightened. The cotter pin 34: isarranged in the opening in the end of the brace to secure it inposition.

In assembling a derrick, the parts are arranged with the variousopenings registering with each other and the bolts are. placed 7 inposition. The handle 32 of the rotating block is turned substantially180 and the end 28 of the brace is placed. in position, the upper end 23having been previously secured in position and the cotter pin 26 placedin the openingin the upper end of the brace. After the various parts ofthe derrick have been assembled, the blocks are rotated to tighten thebraces and the rings are slipped over the handles to retain them in atightened position. The parts of the fittin are properly constructed soas to arrange 516 various openings to producea symmetrical structurewhen the derrick is assembled. It is merely necessary for the rigbuilder in the field to place the bolts in their proper positions andtighten them and then tighten the braces, the plates 5 and 6 bein shopriveted to the derrickparts. The num er of bolts to'be used. in erectingthe derrick isreduced to a minimum and a very efiicient construction isprovided.

It is to be understood that while" we have described the preferredembodiment of our invention, various changes in the shape,

size, and arrangement of parts may be resorted to without-departing fromthe spirit of the invention or the scope of the subjoined claims.

Having thus described our invention, we claim: Q

. 1 A derrick fitting comprising a pair of leg sections and a pair ofhorizontal girths formed of angle iron, a plate secured to one end ofone of said girths, said plate being provided with aportionprojectingbeyond the end of the girth, a plate carried by one end of one of saidleg sections and projecting laterally therefrom, the other girth beingadapted to be secured to said second plate, the ends of said legsections being overlapped, and means for securing the overlapped ends tothe projecting portionof said first plate.

2. A derrick fitting comprising a pair of leg sections and a pair ofhorizontal girths formed of angle iron, a plate secured to one end ofone of said girths, said plate being provided with a portion projectingbeyond the endof the girth, the upper and lower edges of theprojectingportion of said plate being provided with, oppositely arrangedtures in presence of two witnesses,

, RICHARD RALPHBLOSS. WILLIAM SCHWEMLEIN.

/ lVitnesses:

HOWARD S. Drrsorr, HERBERT L. ;POSTLEWAIT.

project-

